Surely, only the most joyless of pre-heart-upsize Grinches could fail to be at least a little bit charmed by this video posted to Youtube by Conservative MP Paul Calandra earlier this week, in which more than two dozen Conservative caucus members get into the holiday spirit with a serial read-a-long of Clement Clarke Moore's timeless classic, Twas the Night Before Christmas.

Spoiler alert: Not surprisingly, Prime Minister Stephen Harper gets the first — and last — lines — he is the boss, after all — but each and every MP does his or her best to make the most of their brief moments in the spotlight.

The full list of caucus members to get in on the Christmas spirit, in order of appearance: